7 Problem solving. Basic problem solving. Status-light patterns. Fatal error secondary messages. Accessory error secondary messages

Transcription

1 7 Problem solving Basic problem solving Status-light patterns Fatal error secondary messages Accessory error secondary messages Media problemsolving Printed page is different from what appeared on screen Image problem solving Clear jams Diagnostic resources Network-setup problemsolving Reset the printer Troubleshooting tools and reference diagrams ENWW 137

2 Basic problem solving Table 7-1 Basic problem solving When the product is connected to a correctly grounded power source, the LEDs on the control panel do not illuminate and the main motor does not rotate. The printer does not turn on. Cause Solution No power to the printer. 1. Verify that the power switch is turned on. 2. Verify that the power cable is correctly plugged into the outlet and the printer. 3. Verify that the power outlet has the correct voltage. The power inlet/switch cable assembly is defective. The ECU is defective. Replace the power inlet/switch cable assembly. Replace the ECU. When turned on, the LEDs on the control panel light up, but the main motor does not rotate. The printer turns on, but the motor does not rotate. Cause The print cartridge door is open. Media is jammed in the paper path. The motor cable is not connected correctly. The motor is not mounted correctly in the printer chassis. A gear is damaged or jammed. The ECU is defective. The main motor is defective. Solution Close the print cartridge door. Clear all media from the paper path and make sure that all sensors are working correctly. Reconnect the motor cable. Verify that the motor is connected correctly and that it rotates freely. Replace the gear assembly. Replace the ECU. Replace the motor. The printer turns on and the motor rotates, but none of the control panel lights turn on, and pressing the control panel buttons has no effect. The printer is unresponsive. Cause The control panel cable is not connected correctly. The control panel is defective. The formatter is defective. Solution Reconnect the control panel cable. Replace the control panel. Replace the formatter. 138 Chapter 7 Problem solving ENWW

3 Table 7-1 Basic problem solving (continued) The printer is on, but the control panel lights indicate that the printer is not in the "ready" state. The printer is not "ready." Cause The printer has an internal error that was detected during the power-on self-test sequence. Solution Consult the list of control panel light patterns to identify and correct the error. The printer turns on, the motor rotates, and the control panel indicates the "ready" state, but the printer does not print. The printer does not print. Cause A printer component is defective. Solution Perform an engine test to verify print-engine components. 1. Press the engine test switch to print an engine test. 2. If the engine test page does not print, check all of the connectors on the ECU and reconnect any cables that are connected incorrectly. 3. If, after checking the connectors, the error persists, replace the ECU. The formatter is defective. Press the Go button to print a Demo page. If the Demo page does not print, replace the formatter. The printer prints the engine test and the Demo page, but does not print jobs sent from a computer. The printer does not print from a computer. Cause The cable is not connected correctly. An incorrect printer driver is selected. The printer driver is not installed correctly. Other devices are connected to the printer (for example, through a switch or hub) that are interfering with the computer-printer communications. There is a computer-port communications problem. The formatter is defective. Solution Reconnect the cable. Select the correct printer driver. Uninstall and then reinstall the printer software. Make sure that you use the correct procedure and port setting. Disconnect the other devices, switches, or hubs. Reset the computer port settings (see the computer user guide for more information). Replace the formatter. ENWW Basic problem solving 139

4 Status-light patterns Table 7-2 Status-light legend Symbol for "light off" Symbol for "light on" Symbol for "light blinking" Table 7-3 Control-panel status light patterns Error code Pattern Description Action Initialization/Startup While in the Startup state, the Go, Ready, and Attention lights cycle (at the rate of 500 ms) one after another. During the Initialization, Reconfiguration, and Job Cancel processes, pressing buttons has no effect. Reconfiguration Initialization During the printer start up, you can request special initialization sequences that reconfigure the printer. When one of the sequences is requested, such as cold reset, the lights cycle as in the Initialization/Startup state. Job Cancel After the cancellation process has been completed, the printer returns to the Ready state. 140 Chapter 7 Problem solving ENWW

5 Table 7-3 Control-panel status light patterns (continued) Error code Pattern Description Action Ready The printer is ready with no job activity. To print a Configuration page, press and hold the Go button for 5 seconds. To print a Demo page, press and release the Go button Processing Data The printer is processing or receiving data. To cancel the current job, press the Cancel button. ENWW Status-light patterns 141

6 Table 7-3 Control-panel status light patterns (continued) Error code Pattern Description Action Manual Feed or Continuable Error This state can be reached in the following circumstances: Manual feed General continuable error Memory configuration error To recover from the error and print whatever data is possible, press the Go button. If the recovery is successful, the printer goes to the Processing Data state and completes the job. If the recovery is unsuccessful, the printer returns to the Continuable Error state. Personality/Job-related error Attention Close the print-cartridge door. The print-cartridge door is open. 142 Chapter 7 Problem solving ENWW

7 Table 7-3 Control-panel status light patterns (continued) Error code Pattern Description Action X Fatal Error Turn off the printer, wait 10 seconds, and turn on the printer. Unplug the printer for five minutes. Then plug it back in and turn the power on. If you are unable to resolve the problem, contact HP. Accessory Error To display additional error information, press the Go button. The light pattern changes. When you release the Go button, the printer returns to the initial Accessory Error state. ENWW Status-light patterns 143

8 Table 7-3 Control-panel status light patterns (continued) Error code Pattern Description Action Toner Low The Go, Ready, and Attention lights act independently of the Toner Low state. Order a new print cartridge and have it ready. Toner Missing The print cartridge has been removed from the printer. Reinsert the print cartridge in the printer. 144 Chapter 7 Problem solving ENWW

9 Table 7-3 Control-panel status light patterns (continued) Error code Pattern Description Action Jam Clear the jam. ENWW Status-light patterns 145

10 Table 7-3 Control-panel status light patterns (continued) Error code Pattern Description Action Paper Out Load paper or other media. Paper Mount The loaded paper or other media is not supported. Load acceptable paper or other media. Press the Go button to override the condition. 146 Chapter 7 Problem solving ENWW

11 Fatal error secondary messages If the printer has a fatal error, press and hold the Go button to see a secondary error message. Table 7-4 Fatal error secondary messages Error code Pattern Description Action 79XXX General fatal error 1. Turn the printer off, and then turn the printer on again. 2. If the error persists, disconnect the I/O cable and print an engine test. If the selftest is successful, reconnect the I/O cable. 3. If the error persists, replace the formatter Engine error. The formatter and engine are not communicating. 1. Unplug the printer, and then plug it in again. 2. Reseat the formatter cable in the ECU. 3. If the error persists, replace the formatter. 4. If, after replacing the formatter, the error persists, replace the ECU. ENWW Fatal error secondary messages 147

12 Table 7-4 Fatal error secondary messages (continued) Error code Pattern Description Action Laser/scanner error. The laser/scanner has a malfunction. 1. Check the laser/ scanner cable connections. 2. If the error persists, replace the laser/ scanner. 148 Chapter 7 Problem solving ENWW

13 Table 7-4 Fatal error secondary messages (continued) Error code Pattern Description Action 57 Fan motor error 1. Check the fan cable connections. 2. If the error persists, replace the fan. 50XXX Fuser error. The fuser has a malfunction. 1. Unplug the printer for at least ten minutes, and then plug it in again. 2. Verify that the fuser connector and thermistor connector are both firmly seated in the ECU 3. Perform a heating element resistance check. 4. If the resistance readings are correct, but the error persists, replace the fuser. ENWW Fatal error secondary messages 149

14 Accessory error secondary messages Table 7-5 Accessory error secondary messages Error code Pattern Description Action Accessory error If the printer has an accessory error, press and hold the Go button to see the secondary error message. Release the Go button to return to the initial accessory error state. 53XXXX 79XXX DIMM slot error 1. Verify that the DIMM is correctly seated. 2. If the error persists, replace the DIMM. 150 Chapter 7 Problem solving ENWW

15 Media problemsolving The following problems with media cause print-quality deviations, jamming, or damage to the printer. ENWW Media problemsolving 151

16 Problem Cause Solution Poor print quality or toner adhesion The paper is too moist, too rough, too heavy or too smooth, or it is embossed or from a faulty paper lot. Try another kind of paper, between 100 and 250 Sheffield, with 4 to 6% moisture content. Dropouts, jamming, or curl The paper has been stored incorrectly. Store paper flat in its moisture-proof wrapping. Excessive curl The paper has variability from one side to the other. The paper is too moist, has the wrong grain direction, or is of short-grain construction The paper varies from side-to-side. Turn the paper over. Open the rear output bin, or use longgrain paper. Turn the paper over. Jamming, damage to printer The paper has cutouts or perforations. Use paper that is free of cutouts or perforations. Problems with feeding The paper has ragged edges. Use high-quality paper that is made for laser printers. Print is skewed (crooked). The paper varies from side-to-side. The paper is too moist, too rough, too heavy or too smooth, has the wrong grain direction, or is of short-grain construction or it is embossed or from a faulty paper lot. The media guides might be incorrectly adjusted. Turn the paper over. Try another kind of paper, between 100 and 250 Sheffield, 4 to 6% moisture content. Open the rear output bin, or use longgrain paper. Remove all media from the input tray, straighten the stack, and then load the media in the input tray again. Adjust the media guides to the width and length of the media that you are using and try printing again. More than one sheet feeds at one time. The media tray might be overloaded. Remove some of the media from the tray. The printer does not pull media from the media input tray. The printer does not pull media from media input tray when using the automatic two-sided printing feature. The media might be wrinkled, folded, or damaged. The printer might be in manual-feed mode. The pickup roller might be dirty or damaged. The paper-length adjustment control in tray 2 or optional tray 3 is set at a length that is greater than the media size. The automatic two-sided printing media-size selector is not set to the correct page size. Verify that the media is not wrinkled, folded, or damaged. Try printing on media from a new or different package. Verify that the printer is not in manual feed mode and print your job again. Contact HP Customer Care. Adjust the paper-length adjustment control to the correct length. Push in the media selector for letter/ legal-size media. Pull out the mediasize selector for A4-size media. 152 Chapter 7 Problem solving ENWW

17 Printed page is different from what appeared on screen Choose the item that best describes the problem: Garbled, incorrect, or incomplete text on page 153 Missing graphics or text, or blank pages on page 153 Page format is different from another HP LaserJet printer on page 154 Graphics quality on page 154 Garbled, incorrect, or incomplete text The wrong printer driver might have been selected when the software was installed. Make sure that the HP LaserJet P2015 printer driver is selected in the printer Properties. If a specific file prints garbled text, there might be a problem with that specific file. If a specific application prints garbled text, there might be a problem with that application. Make sure that the appropriate printer driver is selected. There might be a problem with your software application. Try printing from another software application. The USB cable might be loose or defective. Try the following remedies: Disconnect the cable and reconnect it at both ends. Try printing a job that you know works. If possible, attach the cable and printer to another computer, and try printing a job that you know works. Try using a new USB 2.0 cable that is 3 m (10 ft) or less in length. Turn off the printer and the computer. Remove the USB cable, and inspect both ends of the cable for damage. Reconnect the cable, making sure that the connections are tight. Make sure that the printer is directly connected to the computer. Remove any switchboxes, tape backup drives, security keys, or any other devices that are attached between the USB port on the computer and the printer. These devices can sometimes interfere with communication between the computer and the printer. Restart the printer and the computer. Missing graphics or text, or blank pages Make sure that your file does not contain blank pages. The sealing tape might still be in the print cartridge. Remove the print cartridge, and pull the tab on the end of the cartridge until the entire length of the tape is removed. Reinstall the print cartridge. To check the printer, print a Demo page by pressing the Go button. The graphic settings in the printer Properties might not be correct for the type of job that you are printing. Try a different graphic setting in the printer Properties. Clean the printer, particularly the contacts between the print cartridge and the power supply. ENWW Printed page is different from what appeared on screen 153

18 Page format is different from another HP LaserJet printer If you used an older or different HP LaserJet printer driver (printer software) to create the document, or if the printer Properties settings in the software are different, the page format might change when you try to print using your new printer driver or settings. To help eliminate this problem, try the following remedies: Create documents and print them using the same printer driver (printer software) and printer Properties settings regardless of which HP LaserJet printer you use to print them. Change the resolution, paper size, font settings, and other settings. Graphics quality The graphics settings might be unsuitable for your print job. Check the graphic settings, such as resolution, in the printer Properties and adjust them as necessary. NOTE You might lose some resolution when converting from one graphics format to another. 154 Chapter 7 Problem solving ENWW

19 Image problem solving This section provides information about identifying and correcting print defects. Light print or faded The print cartridge is nearing end of life. The media might not meet Hewlett-Packard's media specifications (for example, the media is too moist or too rough). If the whole page is light, the print density adjustment is too light or EconoMode might be turned on. Adjust the print density, and disable EconoMode in the printer Properties. Toner specks The media might not meet Hewlett-Packard's media specifications (for example, the media is too moist or too rough). The printer might need to be cleaned. Dropouts A single sheet of media might be defective. Try reprinting the job. The media's moisture content is uneven or the media has moist spots on its surface. Try printing with new media. The media lot is bad. The manufacturing processes can cause some areas to reject toner. Try a different type or brand of media. The print cartridge might be defective. ENWW Image problem solving 155

20 Vertical lines The photosensitive drum inside the print cartridge has probably been scratched. Install a new HP print cartridge. Gray background Make sure that tray 1 is in place. Decrease the print density setting through HP ToolboxFX or the embedded Web server. This decreases the amount of background shading. Change the media to a lighter basis weight. Check the printer's environment. Very dry (low humidity) conditions can increase the amount of background shading. Install a new HP print cartridge. Toner smear If toner smears appear on the leading edge of the media, the media guides might be dirty. Wipe the media guides with a dry, lint-free cloth. Check the media type and quality. Try installing a new HP print cartridge. The fuser temperature might be too low. In your printer driver, make sure the appropriate media type is selected. 156 Chapter 7 Problem solving ENWW

21 Loose toner Clean the inside of the printer. Check the media type and quality. Try installing a new HP print cartridge. In your printer driver, make sure the appropriate media type is selected. Plug the printer directly into an AC outlet instead of into a power strip. Vertical repetitive defects The print cartridge might be damaged. If a repetitive mark occurs at the same spot on the page, install a new HP print cartridge. The internal parts might have toner on them. If the defects occur on the back of the page, the problem will probably correct itself after a few more printed pages. In your printer driver, make sure the appropriate media type is selected. Misformed characters If characters are improperly formed, producing hollow images, the media stock might be too slick. Try a different media. If characters are improperly formed, producing a wavy effect, the printer might need service. Print a configuration page. If the characters are improperly formed, contact an HP-authorized dealer or service representative. ENWW Image problem solving 157

22 Page skew Make sure that the media is loaded correctly and the media guides are not too tight or too loose against the media stack. The input bin might be too full. Check the media type and quality. Curl or wave Check the media type and quality. Both high temperature and humidity cause media to curl. The media might have been in the input tray too long. Turn over the stack of media in the tray. Also, try rotating the media 180 in the input tray. Open the straight-through output door and try printing straight through. The fuser temperature might be too high. In your printer driver, make sure the appropriate media type is selected. If the problem persists, select a media type that uses a lower fuser temperature, such as transparencies or light media. Wrinkles or creases Make sure that media is loaded properly. Check the media type and quality. Open the straight-through output door and try printing straight through. Turn over the stack of media in the tray. Also, try rotating the media 180 in the input tray. For envelopes, this can be caused by air pockets inside the envelope. Remove the envelope, flatten the envelope, and try printing again. 158 Chapter 7 Problem solving ENWW

23 Toner scatter outline If large amounts of toner have scattered around the characters, the media might be resisting the toner. (A small amount of toner scatter is normal for laser printing.) Try a different media type. Turn over the stack of media in the tray. Use media designed for laser printers. ENWW Image problem solving 159

24 Clear jams Occasionally, media becomes jammed during a print job. You are notified of a media jam by an error in the software and the printer control-panel lights. The following are some of the causes of media jams: The input trays are loaded improperly or too full. NOTE When you add new media, always remove all of the media from the input tray and straighten the stack of new media. This helps prevent multiple sheets of media from feeding through the printer at one time, reducing media jams. The media does not meet HP specifications. The printer might need to be cleaned to remove paper dust and other particles from the paper path. There might be loose toner in the printer after a media jam. This toner clears up after a few sheets print. CAUTION Media jams might result in loose toner on the page. If you get any toner on your clothes, wash them in cold water. Hot water will permanently set the toner into the fabric. Print-cartridge area To clear a jam in the print-cartridge area, perform the following steps: CAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. 1. Press the print-cartridge-door button, and then remove the print cartridge from the printer. CAUTION CAUTION To prevent damage to the print cartridge, minimize its exposure to direct light. After removing the print cartridge, handle it only on the ends. 160 Chapter 7 Problem solving ENWW

25 2. Open the straight-through output door. 3. Pull down the green pressure-release levers. 4. With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer. ENWW Clear jams 161

26 5. Replace the print cartridge, and close the print-cartridge door. Input trays To clear a jam in the input trays, perform the following steps: CAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. 1. Open the straight-through output door. 2. Pull down the green pressure-release levers. 162 Chapter 7 Problem solving ENWW

27 3. Press the print-cartridge-door button, and then remove the print cartridge from the printer. CAUTION After removing the print cartridge, handle it only on the ends. 4. With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer. 5. Insert the print cartridge in the printer and close the print-cartridge door. ENWW Clear jams 163

28 6. Open tray With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer. 164 Chapter 7 Problem solving ENWW

29 8. If no media is visible, open the print-cartridge door, remove the print cartridge, and pull down the upper media guide. Carefully pull the media up and out of the printer. 9. Close tray 2. Output bin CAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer. ENWW Clear jams 165

30 Straight-through output path To clear a jam in the straight-through output path, perform the following steps: CAUTION Do not use sharp objects, such as tweezers or needle-nose pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. 1. Open the straight-through output door. 2. Pull down the green pressure-release levers. 166 Chapter 7 Problem solving ENWW

31 3. With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer. NOTE If you cannot grasp the media with your hands, perform the procedure in Printcartridge area on page Close the straight-through output door. Automatic two-sided printing path To clear a jam in the automatic two-sided printing path, perform the following steps: ENWW Clear jams 167

32 CAUTION Do not use sharp objects, such as tweezers or needlenose pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. 1. Open the straight-through output door. 2. Pull down the green pressure-release levers. 168 Chapter 7 Problem solving ENWW

33 3. Remove tray Push down on the green lever on the automatic two-sided printing path door on the front of the printer. 5. With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer. ENWW Clear jams 169

34 6. Close the automatic two-sided printing path door by firmly pushing it up. 7. Reinsert tray Open the automatic two-sided printing path door on the back of the printer. 170 Chapter 7 Problem solving ENWW

35 9. With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer. 10. Close the automatic two-sided printing path door. ENWW Clear jams 171

36 Diagnostic resources Engine test The engine test verifies that the print engine is functioning correctly. During the test, the printer prints horizontal lines down the entire printable area of a page. The formatter is bypassed during the engine test. NOTE The formatter must be connected to the ECU to perform an engine test. 1. Remove the left side cover. 2. Press the engine-test switch. A single test page prints. Figure 7-1 Location of engine-test switch Continuous self-test The continuous self-test puts the device into a continuous printing mode without having to send jobs to it. 1. Turn off the printer. 2. Press and hold the Go button. 3. Turn on the printer and continue to hold the Go button for approximately 20 seconds, but no longer than 30 seconds, until the Attention and Ready lights illuminate. 4. Release the Go button. NOTE If the Attention, Ready, and Go lights illuminate before you release the Go button, start again at step The Ready light starts blinking, indicating that the device is performing a continuous self-test. To terminate the continuous self-test, press the Cancel button. 172 Chapter 7 Problem solving ENWW

37 Half self-test functional check The half self-test check determines which printing process is malfunctioning. 1. Print a Configuration page. 2. Press the print-cartridge-door button after the paper advances halfway through the printer (approximately five seconds after the motor begins rotating). The leading edge of the paper should have advanced past the print cartridge. 3. Remove the print cartridge. 4. Open the print cartridge drum shield to view the drum surface. If a dark and distinct toner image is present on the drum surface, assume that the first two functions of the electrophotographic process are functioning (image formation and development). Troubleshoot the failure as a transfer or fusing problem. If there is no image on the photosensitive drum, perform these checks: 1. Make sure you removed the entire length of the sealing tape from the print cartridge before you installed the cartridge. 2. Perform a drum rotation functional check to ensure that the drum is rotating. 3. Perform a high-voltage contacts check. Drum rotation functional check The photosensitive drum, located in the print cartridge, must rotate for the print process to work. The photosensitive drum receives its drive from the main drive assembly. NOTE This test is especially important if refilled print cartridges have been used. 1. Open the print-cartridge door. 2. Remove the print cartridge. 3. Mark the drive gear on the cartridge with a felt-tipped marker. Note the position of the mark. 4. Install the print cartridge and close the print-cartridge door. The startup sequence should rotate the drum enough to move the mark. 5. Open the print-cartridge door and inspect the gear that was marked in step 3. Verify that the mark moved. If the mark did not move, inspect the main drive assembly to make sure that it is meshing with the print cartridge gears. If the drive gears appear functional and the drum does not move, replace the print cartridge. Heating element check Paper passes between the heating element and a soft pressure roller to fuse toner to the paper. 1. Unplug the printer for at least ten minutes. 2. Verify that the thermistor connector is seated into both the printer chassis and the ECU. ENWW Diagnostic resources 173

38 3. Remove the heating element connector from the ECU. To measure the continuity of the heating element, measure the resistance between the two pins at the end of the cable. NOTE Normal resistance is 25 ohms +/- 10 ohms for the 110 V printer and 80 ohms +/- 20 ohms for the 220 V printer. If no resistance is measured, replace the fuser. 4. Remove the thermistor connector, and then measure the resistance between J206 pins one and two and between J206 pins three and four. NOTE Normal resistance between both pairs of pins is 370K ohms +/- 50K ohms at 20 C (68 F). 5. If no resistance is measured, replace the fuser. High-voltage contacts check The high-voltage contacts in the printer must have a good connection with the contacts on the print cartridge to provide the necessary voltages for the electrophotographic processes. Checking the print cartridge contacts Remove the print cartridge and visually inspect the three connection points on the ends of the print cartridge: drum ground (1), charging (2), and developing roller (3). If one is dirty or corroded, clean the connection with isopropyl alcohol. If one is damaged, replace the print cartridge. Figure 7-2 Print cartridge high-voltage connection points (right side) Figure 7-3 Print cartridge high-voltage connection points (left side) CAUTION After removing the print cartridge, handle it only on the ends. 174 Chapter 7 Problem solving ENWW

39 Checking the high-voltage connector assembly Visually inspect the cartridge connection points inside the printer to make sure that they are not dirty or corroded. If the pins are dirty, clean them with isopropyl alcohol. ENWW Diagnostic resources 175

40 Network-setup problemsolving If the computer cannot discover the networked HP LaserJet 2015 Series printer, perform the following steps: 1. Check the cables to ensure that they are properly connected. Check all of the following connections: Power cables Cables between the printer and the hub or switch Cables between the hub or switch and the computer Cables to and from the modem or Internet connection, if applicable 2. Verify that the computer network connections are working correctly (Windows only): On the Windows desktop, double-click My Network Places or Network Neighborhood. Click the Entire Network link. Click the Entire Contents link. Double-click one of the network icons, and make sure that some devices are listed. 3. Verify that the network connection is active: Check the network light on the network (RJ-45) connector on the back of the printer. If one of the lights is on solid, the printer is connected to the network. If both network lights are off, check the cable connections from the printer to the gateway, switch, or hub to ensure that the connections are secure. If the connections are secure, turn off the power to the printer for at least 10 seconds, and then turn on the power to the printer. 4. Print a Network Configuration page. On the Network Configuration page, see if a non-zero IP address is assigned to the printer. If the Network Configuration page does not have a valid, non-zero IP address, reset the HP internal network port to the factory defaults by pressing the Go and Cancel buttons at the same time. After the Attention, Ready, and Go lights finish cycling, the printer returns to a Ready state and the reset is complete. Two minutes after the printer reaches the Ready state, print another Network Configuration page, and check to see if a valid IP address is assigned to the printer. If the IP address is still zeros, contact the network administrator. 176 Chapter 7 Problem solving ENWW

41 Reset the printer NVRAM initialization CAUTION Only perform the following procedure if absolutely necessary. Performing an NVRAM initialization resets some parameters that cannot be restored later. NVRAM initialization sets all default variables stored in NVRAM back to factory default values or to a default ROM value, depending on the variable. It also performs a system reset. NVRAM initialization resets the following: All menu settings to factory default values Factory settings such as formatter number, page counts, and factory paper settings Use the following procedure to perform an NVRAM initialization. 1. Turn the printer off. 2. Press and hold down the Go button. 3. Turn the printer on, and continue to hold the Go button for at least 20 seconds. During this process, the Go button, Attention, and Ready LEDs each turn on. 4. Release the Go button. The printer lights begin cycling. After the NVRAM initialization is complete, the printer returns to the ready state. Super NVRAM initialization This feature is similar to NVRAM initialization, except all of NVRAM is re-initialized (including the configuration parameters not reset by an NVRAM initialization). Use the following procedure to perform an NVRAM initialization. 1. Turn off the printer. 2. Press and hold the Go button. 3. Turn on the printer and continue to hold the Go button for at least 50 seconds. During this process, the Attention, Ready, Go lights turn on. Then the Attention and Ready lights turn off, leaving only the Go light illuminated. 4. Release the Go button. The Go, Ready and Attention lights turn on. 5. Press and hold the Go button. All lights turn off. During the next three seconds, the Go, Ready and Attention lights turn on in that order, one per second. 6. Release the Go button to perform the initialization. The control panel lights begin cycling from front to back. After the Super NVRAM initialization process is complete, the printer returns to the ready state. ENWW Reset the printer 177

42 Network reset A network reset changes all network system parameters in NVRAM to the factory defaults. During the network-reset process, all button presses are ignored. Use the following procedure to perform a network reset. 1. Turn off the printer. 2. Press and hold the Job Cancel button. 3. Turn on the printer and continue to hold the Job Cancel button for approximately 10 seconds, but no longer than 20 seconds. During this process, the Attention light turns on. 4. Release the Job Cancel button. The Attention, Ready, and Go lights begin cycling from front to back. After the network-reset process is complete, the device returns to the ready state. Cold reset NOTE If the Attention and Ready lights illuminate before you release the Job Cancel button, start again at step 1. A cold reset changes most system parameters in NVRAM to the factory defaults. However, unlike NVRAM initialization, a cold reset does not reset the page count, the paper tray sizes, language, or formatter number. NOTE A cold reset also resets all the HP Jetdirect settings as well as the printer settings. Use the following procedure to perform a cold reset. 1. Turn off the printer. 2. Press and hold the Go button. 3. Turn the printer on, and continue to hold the Go button for at least 5 seconds, but not longer than 15 seconds. During this process, the Attention LED turns on. 4. Release the Go button. NOTE If both the Attention and the Ready LEDs turn on before you release the Go button, you must start the procedure again with step 1. The printer's LEDs begin cycling. The cold-reset process runs until completion, and the printer returns to the ready state. 178 Chapter 7 Problem solving ENWW

43 Troubleshooting tools and reference diagrams Repetitive image defects If the printer output has a consistent, repetitive defect, then use Table 7-6 Repetitive image defects on page 179 to determine which part needs to be replaced based on the measured distance between the repetitions of the defect. Table 7-6 Repetitive image defects Distance between identical defects Dirty or damaged roller Solution 37.7 mm (1.48 inches) Primary charging roller Replace the print cartridge mm (1.69 inches) Registration roller Replace the registration assembly mm (1.73 inches) Developing cylinder Replace the print cartridge mm (1.82 inches) Transfer roller Replace the transfer roller mm (2.22 inches) Fuser film Replace the fuser mm (2.72 inches) Pressure roller Replace the fuser mm (2.97 inches) Photosensitive drum Replace the print cartridge. ENWW Troubleshooting tools and reference diagrams 179

44 General timing chart Figure 7-4 General timing chart 180 Chapter 7 Problem solving ENWW

45 Circuit diagram Figure 7-5 Circuit diagram (1 of 2) ENWW Troubleshooting tools and reference diagrams 181

46 Figure 7-6 Circuit diagram (2 of 2) 182 Chapter 7 Problem solving ENWW

47 Solenoids Figure 7-7 Solenoids 1 Duplex solenoid 2 Tray 1 pickup solenoid 3 Tray 2 pickup solenoid ENWW Troubleshooting tools and reference diagrams 183

48 Switches and sensors Figure 7-8 Switches and sensors 1 Interlock switch 2 Delivery sensor 3 Top-of-page sensor 184 Chapter 7 Problem solving ENWW

49 Rollers and pads Figure 7-9 Rollers and pads 1 Transfer roller 2 Pressure roller 3 Pickup roller 4 Separation pad ENWW Troubleshooting tools and reference diagrams 185